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(2009 XH8)
Classification: Amor [NEO]          SPK-ID: 3483649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .47892247843968 0.00010301  
a 2.06719272097019 0.00039985 au
q 1.077167659630681 4.5971e-06 au
i 4.923951707565012 0.00083345 deg
node 79.32315975486003 0.0018093 deg
peri 1.52048013926091 0.0033958 deg
M 186.272515774775 0.40838 deg
tp 2459524.384931871572
(2021-Nov-05.88493187)
1.3835 TDB
period 1085.600107057682
2.97
0.31497
0.0008623
d
yr
n .3316138213874291 9.6213e-05 deg/d
Q 3.057217782309699 0.00059134 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      55 days  
   first obs. used      2009-12-15  
   last obs. used      2010-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40658  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:58:45  

Additional Information
 Earth MOID = .0929753 au 
 Jupiter MOID = 2.22149 au 
 T_jup = 3.620 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.2   n/a MPO172390  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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